Suspension means for high-potential wires.



c. H. THO RDARSON SUSPENSION MEANS FOR HIGH POTENTIAL W|RES\ APPLICATION FILED APR. l9, 192- RENEWED JAN. 26, I918. 1,258,722. Patented Mal-.12, 1918.

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1721/0220 7 6 7265267 11? 771 odamon CHESTER H. THORIDAESQN, F CHICAGU, ILLINOIS.

SUSPENSIUN MEANS FOR HIGH-POTENTIAL VTIRES.

Specification of Letters Patent.

Patented Mar. 12,

Application filed April 19, 1912, Serial No. 691,801. Renewed January 26, 1918. Serial No. 214,029.

To all whom it may concern:

Be it known that It, CHESTER H. Trronnanmm a citizen of the United States, and a resident of Chicago, in the county of Cook and State of llilinois, have invented certain to ence being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to a novel suspension device for high potential electric wires,

designed to minimize the convection losses of energy from the wires to their supports, as the usual supporting members of towers. The invention consists in the matters hereinafter set forth and more particularly pointed out'in the appended claim,

In accordance with my invention, propose to employ as a suspension means for high potential wires or conductors a series of ropes made of a vegetable fiber of suitable strength, such as hemp, manila, and the like and to impregnate said ropes with a waterproofing material which is a non-conductor, and which, not only fills the fibrous bodies to of the ropes, but also coats the exterior of the ropes. To this end, I may boil the fiber ropes in tar, pitch or other bituminous material which will serve to impregnate the body of the rope and will produce a water-proofing coating thereon of such character as to avoidlthe collection of water upon it. The ropes may be provided at their ends with any suitable means by which they may be attached to the supports between which they are stretched, and are provided midway between their ends with suitable means, as clamping devices, for attaching the high potential wires or conductors thereto, so that the said conductors or wires will lie, as in a as cradle, of such rope structure between said supports.

A suspension device of this character, for high potentlal wires, is extremely economical and durable, and the same possesses great to efficiency in minimizing leakage or loss of energy between the wires or conductors and themetal' supports for the ropes.

In the drawings Figure-1 is a perspective viewtof a section of a high potential wire or conductor and my improved suspension means therefor,

LFig. 2 is a view taken at right angles to the high potential wire, showing one of the supporting ropes in side elevation.

Fig. 3 is an enlarged plan view of one of the clamps by which the wire is attached to the supporting ropes.

Fig. at is an elevation of the upper end of tower for supporting the conductors of a three-wire high potential system with my improved suspension devices.

As shown in Fig. 1 of the drawings, 10 designates a high potential wire or conductor and 11, 11 designate my improved suspension means, comprising ropes arranged crosswise of the wire and attached at their ends to supports 12, 12, which may extend laterally from supporting towers, such as the tower 14 shown in Fig. 4 The ends of the rope are trained about metal eye mem here or loops 15 which are exteriorly hollow or concave to receive the ropes; the ends of the ropes being turned back upon themselves and fastened by the rings 16. The said loops or eyes engage over hooks 17 that are attached to the supporting arms 12.

The said ropes are provided between their ends, preferably at the mid-length thereof, with clamping means to fasten the wire to the suspension ropes. The clamping means herein shown comprise upper and lower plates 18, 19 extending in their greatest length in the direction of the axes of the ropes, and therefore across the wire or conductor 1G. upper and lower plates may be fastened together to clamp the same on the ropes and wire in any suitable manner, as by the rivets or bolts 20 extending therethrough at the sides of the ropes. The

said clam ing plates are transversely curved between their ends to receive the wire 10 and the ropes l1 and to permit the ropes 11 to be diverted or bent sharply up against the wires so as to provide of -set portions in the ropes which will prevent the clamping plates sliding on the ropes and getting out of proper central position with respect thereto. The ropes 11, as before stated, may be made of manila, hemp or like vegetable fiber, of proper diameter, and said ropes may be boiled in tar or other bituminous material, or otherwise treated to impregnate the mass of the ropes with an insulating compound and to also coat the ropes so as to prevent the collection of moisture thereon.

, These suspending ropes 11 will be placed at suitable distances apart, governed by the for supporting a three wire system on a tower 14. In this construction the tower is provided with a vertical extension 22, having at its upper end diverging arms 23, 23 and near its lower end a cross arm 24:. 25,

25 designate suspension ropes that extend between and are supported by plates 26 on the said arms 23, 24:, the ropes being provided between their ends with clamping de- .vices 27 by which to clamp the wires or conductors 1O thereto. Thearrangement shown permits the use ofmy improved suspension means for suspending the three wires 10 at equal distances apart, and thereby secure the advantages of this isometric arrangement.

I claim as my invention In a system for suspending high potential wires, a suspension device embracing, in-

combination with fixed supports, a twisted rope adapted to be stretched horizontally between said supports and to be fastened at its ends thereto, said rope being made wholly of avegetable fibrous material and freely flexible in all operable temperatures, and impregnated with and coated by an electrically insulating, moisture rejecting material, and provided between its ends with means for attaching a highpotential wire thereto. I

In testimony that I claim the foregoing as my invention I afiix my signature in the presence of two witnesses, this 16th day of April, A. D. 1912.

CHESTER H. THORDARSON- Witnesses:

G. 'E. DowLE, W. L. HALL. 

